\section{Motivating Scenario}
\label{section:example}

In this section, we introduce our motivating use case scenario. 

To illustrate our approach we introduce a use case…

Feedback objective monitoring
Provenance 
Feedback subjective: 
Provenance: who, when

\textbf{Structuring idea:} propose a use case with conflicting objective and subjective feedback. 
We illustrate the usefulness of feedback’s provenance by showing how it can be used to resolve this conflict (identifying incorrect of malicious feedback). 

\textbf{Base:} Let’s consider a consumer C using a service S offered by a provider P. A Monitor M is in charge of monitoring performance of S according to the SLA.

\textbf{Use case idea 1:} C has reported (subjective feedback) that S was not sufficiently responsive. M has reported that all response time of the service were under the SLA requirement.

\textbf{Use case idea 2:} C1 and C2 are two users of the same instance of a PaaS, they have provided diverging feedback for this service, C1 reported a correct responsiveness while C2 reported an insufficient responsiveness. The use of provenance in this case would be to relate to the profile of Consumers and identify the fact that over the related period of time, C1 has used S a small number of times, while C2 has intensively used it. This would allow to give a greater credibility to C2’s feedback compared to C1’s.

\textbf{Use case idea 3:} multiple feedbacks at different moments in time… 


%\begin{figure*}
%\centering
%\includegraphics[width=\textwidth]{motivatingexample3.pdf} %\\[2.5cm]
%\caption{Motivating Example: }
%\label{exampleworkflow}
%\end{figure*}

	
	
